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	<title>Comments on: Long distance SPI installation: Lessons Learned</title>
	<atom:link href="http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/feed/" rel="self" type="application/rss+xml" />
	<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/</link>
	<description>are you still afraid?</description>
	<lastBuildDate>Mon, 08 Jul 2019 19:58:13 +0000</lastBuildDate>
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	<item>
		<title>By: Nathan Bohman</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-8259</link>
		<dc:creator><![CDATA[Nathan Bohman]]></dc:creator>
		<pubDate>Fri, 28 Oct 2016 14:01:31 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-8259</guid>
		<description><![CDATA[Wouldn&#039;t suggestion 2 create a ground loop that would effectively create an antenna and cause noise on the line?]]></description>
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		<title>By: Zack</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-4556</link>
		<dc:creator><![CDATA[Zack]]></dc:creator>
		<pubDate>Fri, 21 Aug 2015 15:12:29 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-4556</guid>
		<description><![CDATA[Thanks for this post it was very helpful! My lights were working most of the time but flickering randomly at other times especially the 5m strips farther down the strand. I believe my issue was with the common ground by trying to ground it to the original source rather than keeping it in series with the previous circuits.]]></description>
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	<item>
		<title>By: Joe markin</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-3199</link>
		<dc:creator><![CDATA[Joe markin]]></dc:creator>
		<pubDate>Fri, 14 Nov 2014 16:18:56 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-3199</guid>
		<description><![CDATA[we find a device named SPI/TTL signal receiver PCB, its accept distance is 200m. here is details: http://www.greeled.net/ttl-spi-signal-receiver.html]]></description>
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		<title>By: Michael</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-2383</link>
		<dc:creator><![CDATA[Michael]]></dc:creator>
		<pubDate>Thu, 25 Jul 2013 18:31:20 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-2383</guid>
		<description><![CDATA[Thanks. It is not a very long distance. In total it will be about 20 meter maximum including the 5 &quot;lamps&quot; with 30 leds per lamp. That&#039;s way I was curios about how you used the 1kOhm between the CLK en DATA and the SPI driver. I will search for the RS485 solutions! :)]]></description>
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		<title>By: michu</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-2382</link>
		<dc:creator><![CDATA[michu]]></dc:creator>
		<pubDate>Thu, 25 Jul 2013 17:59:07 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-2382</guid>
		<description><![CDATA[Well, a long line SPI at high speed is a bad design decision and will cause some troubles. Use rs485 to prevent headache. Anyway you *could* try using a long ws2801 lines and use a slow (&lt;.25MHz) signal and add some &quot;dead pixels&quot; to recreate the signal.]]></description>
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		<title>By: Michael</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-2381</link>
		<dc:creator><![CDATA[Michael]]></dc:creator>
		<pubDate>Thu, 25 Jul 2013 15:45:31 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-2381</guid>
		<description><![CDATA[Hi Michu,

Thanks for all the information, it is very usefull. But I have some questions:
The SPI Driver mentioned at point 4 isn&#039;t used at all to get it work? So you only put the 1kOhm resistor between CLK and DATA (Only at the beginning?) and lower the CPU speed and then it all works as aspected? I have started a project for garden lights with WS2801 ICs and I am trying to make a correct set up for the long distance, but kind of new with this part of electronics :)]]></description>
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	<item>
		<title>By: michu</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1954</link>
		<dc:creator><![CDATA[michu]]></dc:creator>
		<pubDate>Fri, 03 May 2013 17:46:40 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1954</guid>
		<description><![CDATA[bingo! looks good now. btw donations to michu@neophob.com are always welcome ;)]]></description>
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		<title>By: demi</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1952</link>
		<dc:creator><![CDATA[demi]]></dc:creator>
		<pubDate>Fri, 03 May 2013 11:01:44 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1952</guid>
		<description><![CDATA[http://www.pixelfahnder.de/wires4.jpg
ok please tell me its correct so, otherwise..]]></description>
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	<item>
		<title>By: demi</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1951</link>
		<dc:creator><![CDATA[demi]]></dc:creator>
		<pubDate>Fri, 03 May 2013 10:31:41 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1951</guid>
		<description><![CDATA[ah no i got what you mean! 

THANK YOU! LOOKS like another hours of hours of work]]></description>
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	<item>
		<title>By: demi</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1950</link>
		<dc:creator><![CDATA[demi]]></dc:creator>
		<pubDate>Fri, 03 May 2013 10:11:11 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1950</guid>
		<description><![CDATA[sorry for my obtuseness, i have your pics compared to my setup open in photoshop and I don&#039;t get it what ya mean with &quot; just pass the gnd cable as data and clock&quot; do you speak german and can explain it for a it professional who just began to handle with microcontrollers and electronics?]]></description>
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		<title>By: michu</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1949</link>
		<dc:creator><![CDATA[michu]]></dc:creator>
		<pubDate>Fri, 03 May 2013 09:55:27 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1949</guid>
		<description><![CDATA[almost - just pass the gnd cable as data and clock]]></description>
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		<title>By: demi</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1948</link>
		<dc:creator><![CDATA[demi]]></dc:creator>
		<pubDate>Fri, 03 May 2013 09:50:52 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1948</guid>
		<description><![CDATA[Ok last try just to be sure :)

http://www.pixelfahnder.de/wires3.jpg

Damn this will be a great evening if it runns :D]]></description>
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		<title>By: michu</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1947</link>
		<dc:creator><![CDATA[michu]]></dc:creator>
		<pubDate>Fri, 03 May 2013 09:22:36 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1947</guid>
		<description><![CDATA[Well wirings both are wrong, you only pass data and clock (green and yellow) between the panel blocks. however you need to pass the ground signal aswell - this is the reference point for your data signal. See the image on this blog post with the big red BAD on it, the next image shows how you should connect your cables.]]></description>
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		<title>By: demi</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1946</link>
		<dc:creator><![CDATA[demi]]></dc:creator>
		<pubDate>Fri, 03 May 2013 07:57:09 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1946</guid>
		<description><![CDATA[You mean I should it wire like this:

http://www.pixelfahnder.de/Wires.jpg

or

http://www.pixelfahnder.de/Wires2.jpg]]></description>
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		<title>By: demi</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1945</link>
		<dc:creator><![CDATA[demi]]></dc:creator>
		<pubDate>Fri, 03 May 2013 07:36:08 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1945</guid>
		<description><![CDATA[additionaly to the other ground cable or should i use only the connection between the clusters?
Last night some guys told me to update my Ground wiring to the following settings:
http://www.pixelfahnder.de/Updated_Schaltplan.jpg
But still same result]]></description>
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		<title>By: michu</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1943</link>
		<dc:creator><![CDATA[michu]]></dc:creator>
		<pubDate>Thu, 02 May 2013 21:17:49 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1943</guid>
		<description><![CDATA[Just connect ground between the 2nd and 3rd cluster of led modules, not only data and clock.]]></description>
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		<title>By: demi</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1942</link>
		<dc:creator><![CDATA[demi]]></dc:creator>
		<pubDate>Thu, 02 May 2013 21:14:48 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1942</guid>
		<description><![CDATA[Hi,
maybe (hopefully) you can help me.
I have 4 panels a 100 pixels of WS2801 LED which I want to control with my arduino uno or my teensy 2 (or 3). I have 2 power supplys, everyone with 2 rails (http://tinyurl.com/d2fkgzb &#124; http://www.amazon.de/gp/product/B005SNIB96/ref=oh_details_o06_s00_i00?ie=UTF8&amp;psc=1), for each panel 1 rail. If I connect only one panel it works fine, as soon as I use 2 the pixels gone mad or event dont do anything. I am sure its because of the connection of the ground cable. I read a lot of posts in forums and they always say I have to combine ground, so I am really confused and frustrated :(
Would you please take a look at my wiring and give your comments? Sorry for the bad illustration, I didnt find my detailed one..
http://www.pixelfahnder.de/verkabelung.jpg

Thanks so much in advance and keep up the work!! Your blog helped me alot with my project!!]]></description>
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		<title>By: michu</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1712</link>
		<dc:creator><![CDATA[michu]]></dc:creator>
		<pubDate>Sat, 23 Mar 2013 12:52:16 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1712</guid>
		<description><![CDATA[You must fix this in the software or with the controller.]]></description>
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		<title>By: morten</title>
		<link>http://neophob.com/2012/04/long-distance-spi-installation-lessons-learned/#comment-1711</link>
		<dc:creator><![CDATA[morten]]></dc:creator>
		<pubDate>Sat, 23 Mar 2013 12:51:17 +0000</pubDate>
		<guid isPermaLink="false">http://neophob.com/?p=1646#comment-1711</guid>
		<description><![CDATA[hi

can you help me , i have two led stripes with lpd6803 one is rgb and one is bgr when they are connected , is there a way to convert signal from rgb to bgr that both  are the same when connected..]]></description>
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